git-annex/Config/Files.hs
Joey Hess 87d5583a91
use programPath consistently, not readProgramFile
Improve git-annex's ability to find the path to its program, especially
when it needs to run itself in another repo to upgrade it.

Some parts of the code used readProgramFile, probably because I forgot that
programPath exists.

I noticed this when a git-annex auto-upgrade failed because it was running
git-annex upgrade --autoonly, but the code to run git-annex used
readProgramFile, which happened to point to an older build of git-annex.
2020-03-30 16:06:27 -04:00

69 lines
2.1 KiB
Haskell

{- git-annex extra config files
-
- Copyright 2012-2019 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU AGPL version 3 or higher.
-}
{-# OPTIONS_GHC -fno-warn-tabs #-}
module Config.Files where
import Common
import Utility.Tmp
import Utility.FreeDesktop
{- ~/.config/git-annex/file -}
userConfigFile :: FilePath -> IO FilePath
userConfigFile file = do
dir <- userConfigDir
return $ dir </> "git-annex" </> file
autoStartFile :: IO FilePath
autoStartFile = userConfigFile "autostart"
{- Returns anything listed in the autostart file (which may not exist). -}
readAutoStartFile :: IO [FilePath]
readAutoStartFile = do
f <- autoStartFile
filter valid . nub . map dropTrailingPathSeparator . lines
<$> catchDefaultIO "" (readFile f)
where
-- Ignore any relative paths; some old buggy versions added eg "."
valid = isAbsolute
modifyAutoStartFile :: ([FilePath] -> [FilePath]) -> IO ()
modifyAutoStartFile func = do
dirs <- readAutoStartFile
let dirs' = nubBy equalFilePath $ func dirs
when (dirs' /= dirs) $ do
f <- autoStartFile
createDirectoryIfMissing True (parentDir f)
viaTmp writeFile f $ unlines dirs'
{- Adds a directory to the autostart file. If the directory is already
- present, it's moved to the top, so it will be used as the default
- when opening the webapp. -}
addAutoStartFile :: FilePath -> IO ()
addAutoStartFile path = do
path' <- absPath path
modifyAutoStartFile $ (:) path'
{- Removes a directory from the autostart file. -}
removeAutoStartFile :: FilePath -> IO ()
removeAutoStartFile path = do
path' <- absPath path
modifyAutoStartFile $
filter (not . equalFilePath path')
{- The path to git-annex is written here; which is useful when something
- has installed it to some awful non-PATH location. -}
programFile :: IO FilePath
programFile = userConfigFile "program"
{- A .noannex file in a git repository prevents git-annex from
- initializing that repository.. The content of the file is returned. -}
noAnnexFileContent :: Maybe FilePath -> IO (Maybe String)
noAnnexFileContent repoworktree = case repoworktree of
Nothing -> return Nothing
Just wt -> catchMaybeIO (readFile (wt </> ".noannex"))